Glass-drawing apparatus.



H. F. HITNER.

GLASS DRAWING APPARATUS.

APPLIOATION FILED MAR. a. 1909.

1,103,585, Patented July 14,1914,

3 SHEETS-SHEET l.

MQZWM H. F. HITNER. GLASS DRAWING APPARATUS.

APPLICATION FILED MAR. 3. 1909. 1,103,585. Patented July. 14,1914.

3 SHEETS-SHEET 2.

' WITNESSES INVENTOR 5 36 WWW H. F. HITNER.

GLASS DRAWING APPARATUS.

APPLIOATION FILED NAILS, 1909.

1, 1 03,585. Y Patented July 14, 1.914.

3 SHEETS-SHEET 3.

WIVENTQR ww/m during the formation-of the UNITED sTArEs PATENT OFFICE.

H ARRY F. HITNER, OF MOUNT VIERNON, OHIO, ASSIGNORTO PITTSBURGH PLATE GLASS COMPANY, OF PITTSBURGH, PENNSYLVANIA, A CORPORATION OF PENN- SYLVANIA.

GLASS-DRAWING APPARATUS. I

Specification of Letters Patent.

Patented J uly 14, 1914.

" Application filed March a, 1909. Serial No. 481,048.

To all whom it may concern Be it known that I, HARRY F. HITNER, a citizen of the United States,"residing at Mount Vernon, in the county of Knox and State of Ohio, have'invented certain new and useful Improvements in Glass-Drawing Apparatus, of which the following is a specification.

This invention has reference to an improved form of mechanism to be applied in connection with the drawing of glass cylinders such as are formed in the production of window glass, and hasfor its primary object, the provision of apparatus of this character which will-give ready'and reliable control over the various speeds and powers required in the drawing of the said cylinder, throughout the length of the same,

neck of the cylinder, and the motion of the drawing carriage when themylinder is to and also in the lowering of the carriage preparatory to the formation of another cylinder.

a drawing apparatus with my "mechanism shown in plan view The above as well as such other objects as may hereinafter appear, I attain by means of I a cqnstruction which I have illustrated in pre ferred form in the accompanying drawings, 'wherein- I Figure 1 is} view in elevation,

ap lied theretodiagrammatically shown; 'gure-2 isa plan view of a portion of the I" mechanism, particularly showing two mo- 35 tors which I employtogether with the hoist- -1-ng drum andlclutch device;

Figure 8 indicates a side elevation of the in Figure 2'; Figure 4 is a diagrammaticillustration of the wiring connections whereby I secure the: requisite control over the.hoisting carriage and the various speeds needed in the draw-; ing operation; and

Fi ure 5 is a detail of the'control lever. Referring now more particularly to Figure 1 it will be seen that I have therein indicated'a' body of glass-5 from which a cylinder 6 is being drawn by means of a bait or'blow-pipe 7 attached to a vertically risingcarriage 8 guided by the'vertical bars 9 through the hoistingaction of a: cable 10 which runs over a sheave at 11 and is arrangedto-be wound upon a; drum at 1'2-driven by a worm gear on the shaft 13, through the and particularly be taken down,

. dicated on F ig 'fi indicatlngz improvement.

- ratus through the motor 15 .the clutch operate to bring the parts into engagement Such as will cause the shaft of the motor 14 .to' be driven by the motor 15.

provide a double,

dicated 'which may be say 220 volts, and a low voltage generator 24 which may be for practical motors 14 and 15, which latter are more fully shown in Figures 2 and 3.

The motor 14 is preferably of greater horse-power than 15, say about with so as to drive the shaft 13 carrying the worm. The other end of the armature shaft of the motor 14 is provided with a clutch disk 17 adapted to be brought into engagement by magnetic action of the part 18, so as to form a driving connection between the shaft of the motor 14 and the gear 19 which in turn is driven from a pinion 20 carried on the shaft 21 of the motor 15. It will be observed by examination of Figures 2 and 3 that the motor 15 is not in driving connection with the other parts of the driving apparatus when the magnetic clutch 17 and 18 is out of engagement. The cable 10 is arranged to be wound upon the drum 12 as indicated in Figure 2, through power derived from the 2?; horse-power or larger motor 14, the smaller motor which is preferably about horse-power (indicated atnot being in operation except for a portion of the movement of the drawing head or carriage 8.

Referring now to the wiring diagram init will be seen that the small motor 15 is in series connection with the magnetic clutch 18, so that whenever a current is directed by the controlling a 1 As a source of current I voltage generating supply or apparatus inby' the high voltage generator 23 operation about 30 volts, the said generators havi a commonmain lead or positive supply W11'6 25, and each having its own independent'negative wire at 26 and 27. v

The field of the larger motor 14 is preferably independently excited as indicated at 28 indicated respectively in the diagram, while the field 15 of thesmall motor 1-5is preferably series connected as shown.

The controller indicated is in general of 2% horse- 1 power, and by means of the gears 16 engages well known reversing type and is provided with a bar or arm 30 having t t i t at 31 and 32, and the main common or positive lead connected at 33 as the center of rotation. The arm 30 also carries the brush 34 having contacts 35 and 36.

' be clearly seen Upon the face of the controller plate I arrange the contact blocks 37 and 38, the same bein connected by the leads 39 and 10 with the Erushcs of the larger motor 11 as shown.

The controller bar 30 is indicated in dotted lines in the neutral or ofi position. At the left of said position are indicated some contacts (four in number) marked 11, said contacts being connected in circuit by wire 42 with the magnetic clutch 18 and the small motor 1), and thence by return wire 13 leading back to the negative lead 26 of the 220-volt generator.

Farther to the left on the controller is a group of contacts with suitable resistances indicated at 4 1, said contacts being in connection with the negative wire 27 on the low voltage generator, while still farther around to the left there is another group of contacts indicated at 45 with suitable resistances, which said contacts are connected by the wire 26 with the negative side of the high voltage generator.

In operation the controller provides circuits as follows. When it is desired to start the drawing of a cylinder a very slow speed is at first necessary, whence the lever 30 is moved around to contact with the points marked 41, striking at first that one which will have the most resistance, and the circuit will be completed from the common positive wire which connects with the center of the lever 30, and the contact 31 through the resistances 41 and. the lead 42 actuating the magnetic clutch 18, and the small motor 15, the current returning through leads l3 and 26 to the generator 23. This action will bring the small motor 15 into operation t the same time causing engagement of the magnetic clutch and causing the small motor through the gears 20 and 19 to drive the shaft of the motor 14; and this by the ears 16 driving the worm mounted on the s aft 13, drum 12 and winding of the takes place slowly because of the small horse-power of the motor and the large gear reduction which in this operation is through a double set of gears.

Further movement of the lever 30 to the .left will bring into operation the contacts 44 which as will be seen, by contacts 35 and 36 will cause the circuit to traverse the wires 39 and 40, bring into action the low voltage generator 24: in connection W1th the large motor 1 1, thus avoiding any sudden jum in speed as between the small motor 15 and the large motor 14,. the shift from the smaller to the larger motor being compensated for to avoid sudden jerk by the shifting in of the low voltage generator 24. The gradual movement of the arm 30 to the left cutting out more and more of the resistance of the cont-acts 1 1 will accelerate the speed until the arm passes over to the contacts marked 45, which will bring into action the high voltage generator 23, first through a large mass of resistance as indicated on the controller, and gradually cut out said resistance as the arm travels farther to the left to acquire the maximum speed at the extreme position around in the left hand move.- ment.

The positions Maud 15 are reversed on the right hand side of the controller, which will be apparent without explanation, it being unnecessary to provide any reversal however, of the position marked 11, since the positions 44 and 15 give the necessary speeds for the backward movement of the carriage 8, when they are reversed; the chief utility of the position 11 being for the operation of the very slow speed which is requisite to the formation of the verybeginning and neck portions of the cylinder, that is the first portion of the travel: upward of the carriage 8 after the beginning of the formation of the glass article.

Having thus described my invention and illustrated its use, what I claim as new and desire to secure by Letters Patent, is the followin v 1. A dam-drawing apparatus comprising in combination a driven member and power mechanism for actuafi-ing said driven means comprising a pair of electric generators of different voltage, a pair of electric motors of different power, and a single controlling means whereby the motors are successively connected to drive the driven means and whereby] the generators are successively brought into connection with one of the motors. I

2. In a glass drawing apparatus, a driven member and a driving means therefor 'comprising two. electric motors of different power operated byv a high vol-ta circuit, a. low voltage circuit for starting e stronger motor, a. circuit controller whereby the motors may be successively brought into operative connection with the driven member and the circuits changed, and a resistance means for the circuit coming with the circuit controller, arrangedso as to aduate the change between the two motor rives.

3. In glass drawing apparatus, a driven member, and driving means therefor comprising, a main motor, a smaller motor, two generators of difierentvoltage, and a controller. and connections whereby. the driven member is first brought into operative connection with the smaller motor su plied with current'from the generator of igher voltage, then into operative connection with the larger motor supplied with current from the generator of lower voltage, and finally into operative connection with the larger motor supplied with current from the generator of higher voltage.

4. In glass drawing apparatus, a driven member, and driving means therefor comprising, a main motor, a smaller motor, two generators of different voltage, a controller and connections whereby the driven member is first broughtintooperative connection with the smaller motor supplied with current from the generator of higher voltage, then into operative connection with the larger motor supplied with current from the generator of lower voltage, and finally into 0perative connection with the larger motor supplied with current from the generator of.

subscribed witnesses.

HARRY F. HITNER.

Witnesses:

BAUNER M. ALLEN, IRVIN YOUNG.

in the presence of the two 

